High-speed tool steel plate (GB/T9941-1988)

Summary High-speed tool steel sheet is a kind of tool steel with high impact toughness resistance, high wear resistance and high temperature resistance. It is made of high-speed steel and carbon content, it has high hardness and can process chip with high cutting efficiency. High-speed tool steel sheet has high-hardness cutting edge and good wear resistance, it is suitable for machining heat-resistant alloy, stainless steel and some high-hardness materials. High-speed tool steel has a wide range of applications, such as cutting tools, engineering tools, molds and so on. The composition and properties of high-speed tool steel sheet is determined by Standard GB/T9941-1988. Introduction High-speed tool steel sheet is a kind of tool steel with high impact toughness resistance, high wear resistance, and high temperature resistance. It is mainly composed of high-speed steel and carbon content. High-speed tool steel has high hardness and can process chip with high cutting efficiency. It has machinability of semi-finished and finished products, which is better than that of cutting performance. The cutting speed of high-speed tools is twice faster than that of common tools. High-speed tool steel has high-hardness cutting edge, good wear resistance, suitable for machining heat-resistant alloy, stainless steel and some high-hardness materials. High-speed tool steel sheets have a wide range of applications, such as cutting tools, engineering tools, molds and so on. Standard GB/T 9941-1988 The standard of high-speed tool steel sheet is GB/T 9941-1988, which is divided into three categories. Grade 1 contains mainly W6Mo5Cr4V2; Grade 2 contains mainly W18Cr4V; Grade 3 contains mainly W6MoaV. Each category has seven grades of high-speed tool steel sheet. Grade 1: LW6, LW6-1, LW10-1, LW10-2, LW12-1, LW12-2, LW12-3 Grade 2: LF2N-1, LF6-1, LW2-1, LW10-1, LW10-2, LW12-1, LW12-2 Grade 3: LL6-1, LW1, LW2-1, LW10-1, LW10-2, LW12-1, LW12-2 Properties of High-Speed Tool Steel Sheet The properties of high-speed tool steel sheet specified in the standard are generally as follows. 1. Chemical Composition of Tool Steel Sheet The chemical composition of high-speed tool steel sheet is specified in Table 1. 2. Hardness The hardness of high-speed tool steel sheet is generally between HRC50-60 after quenching and tempering. 3. Impact toughness The impact toughness of high-speed tool steel sheet is generally no less than 30J/cm2 after quenching and tempering. 4. Wear resistance The wear resistance of high-speed tool steel sheet is generally no less than 0.7 after quenching and tempering. 5. Corrosion resistance The corrosion resistance of high-speed tool steel sheet is generally no less than 10.0g/m2. 6. Thermal conductivity The thermal conductivity of high-speed tool steel sheet is generally no less than 20W/m-K. Applications High-speed tool steel sheets have a wide range of applications. High-speed tool steel can be used as cutting tools, engineering tools, molds and so on. For example, high-speed tool steel can be used to make molds, high-speed tools, punches, inserts, tungsten carbide cutting tools and so on. The cutting tools made of high-speed tool steel can effectively improve the cutting speed and machining efficiency, and can reduce the cutting force and cutting heat, so that the cutting tool can have a long life. High-speed tool steel can also be used in electronic parts processing, except for cutting tools. High-speed tool steel sheet can also be used to make hard molds, which can reduce cost and increase the service life of molds. Conclusion In summary, High-speed tool steel sheet is a kind of tool steel with high impact toughness resistance, high wear resistance and high temperature resistance. It is made of high-speed steel and carbon content, it has high hardness and can process chip with high cutting efficiency. High-speed tool steel sheet has high-hardness cutting edge and good wear resistance, it is suitable for machining heat-resistant alloy, stainless steel and some high-hardness materials. High-speed tool steel sheet has a wide range of applications, such as cutting tools, engineering tools, molds and so on. The composition and properties of high-speed tool steel sheet is determine by Standard GB/T9941-1988.

High speed tool steel is a kind of high alloy tool steel with high hardness, high wear resistance and good thermal processing performance. According to GB/T 9941-1988, high speed tool steel mainly refers to alloy tool steel with a carbon content of 0.70-1.20. It is mainly used to manufacture high hardness, difficult to shape parts and cutting tools that require good machinability and wear resistance, such as drills, medical molds, taps, lathe tools, hobbing cutters, oblique cutters, hole punches and milling cutters.

High speed tool steel is mainly composed of tungsten and cobalt, and the total content of tungsten and cobalt is usually not less than 5%. In addition, molybdenum, chromium, vanadium, nickel and other elements are also added according to user requirements. Compared with ordinary carbon tool steel, high speed tool steel has higher hardness, wear resistance and red hardness, and its cutting performance is also better.

At present, the commonly used high speed tool steels are YXM1, YXM4, YXM6, YXM8, YXR3 and YXR7. They are mainly used to manufacture high strength die, die, broach, knurl and cutting tools. YXM series high speed steel is mainly used for manufacturing low alloy cutter and saw blade. YXR series is mainly used for the manufacture of large, complex and precise cutting tools, such as milling cutter, broaching cutter and hobbing cutter.

High speed tool steel has strong impact toughness, excellent abrasion resistance, high red hardness and high compressive strength under high temperature, so it is widely used in manufacturing, with good cutting performance, high production efficiency and low production cost.